１９９７年６月２～４日，黔阳县雪峰镇龙家田小学突然一批学生相继发生恶心、呕吐、腹痛、头痛、头晕等中毒症状。６月４日中午我站接到报告后，为查清中毒原因和迅速控制发病人数，立即派出专业队伍赶赴现场展开流行病学调查，现报告如下。１中毒经过及流行病学特点：１... 1997 June 2 ~ 4, Xueyang Town, Qiangyang County, a group of students suddenly a sudden nausea, vomiting, abdominal pain, headache, dizziness and other symptoms of poisoning. At noon on June 4, after receiving the report, the station immediately dispatched a team of professionals to rush to the scene for an epidemiological investigation in order to find out the cause of poisoning and promptly control the number of incidents. The report is as follows. 1 poisoning and epidemiological characteristics: 1 ...